Clutch mechanism.



201 accompanying drawings, in which:

.HUNITED STATES Parana enrich,

FREDERIeKe-l JAHN, or NEW YORK, N, Y., vAssIeNo'a TO THE INlERNATIO'NALPOSTAL ,SUPPLY COMPANY OF NEW YORK, OF BROOKLYN, NEW YORK, A CORPORATIONor NEW YORK. I

CLUTCH MECHANISM,

7 Specification of Letters Patent.

Patented July 30, 1907.

Application filed February 17, 1905: Serial No; 2 16,149.

To all whom it may comma:

Be it known that I, FREDERICK G. JAHbl', a citizen of the United States,residing at the borough of Brooklyn, cityand State of New York, haveinvented certain new and useful Improvements in Clutch Mechanism, ofwhich the following is a specification. I

This invention relates generally to clutch driving mechanism and moreparticularly to that class wherein the clutch is adapted forintermittent driving action. And it has for its objec to provide asimple andcfl'ective mechanism by which thewear of the parts is reducedto the minimum, is self contained .and easy of manufacture andassemblage.

It also has for its object to provide means by which the stop and startof the clutch may be effected with ease andeertainty. p

, As a better understanding of the invention will be from a detaileddescription thereof, such descripltion will'n'owgbe given, referencebeing made to the Figure 1, is a longitudinal sectional elevation. IFig,

2, is a cross section of the same on theline2, 2, of Fig. 1, showing thedriving and driven members clutched. Fig. 3, is alike section on theline3, 3, the clutch shell being omittedand indicated by dotted lines, theparts being in their unclutched positions. Fig. 4, is an elevation-ofthe major portion of the mechanism with the clutch shell and rollsremoved. I

. The improved clutch driving me'chanism consists of a. clutch shell anda hub 21 with-one or more clutch rolls 18 interposed between the two,and means such as a roelc'ann or disengag'er 16 for moving said rollsout of clutching position whenever-the driven part isto'rest.

' The unclutching of the clutch' rolls or their movement'in-tounclutching position may be controlled illustrated by an independentlymounted leven or arm30.

For coiiyenience in manufacture and assembling the hub 21 is made in twoparts, the outer part 22 separatedfrom the other part by distance pieces9, fitting grooves-in the contiguous faces of said-parts and .heldtogether by screws 10. The distancepicces also provide diametricallyopposed and tangentially arranged hardened bearing faces for the hubagainst which the clutch rolls bear; and the space between the twoparts- "of the hub is conveniently occupied. by the disengaghing rockarm 16 with its opposite ends arranged to meet '-'the rolls 18, whenmoving them to unclutch the hub from the clutch shell. The center ofjthedisengaging .rock arm 16 has a polygonal shaped opening slidiugly Vmounted on or engaged by the similarly shaped end of a key or plunger 17that is axially mounted in hearings in the part 22 of the clutch hub andadapted tomovc therein both longitudinally and rotatively when operatingto move the disengaging arm,

The key or plunger 1'7 has an oppositely projecting cross pin 8 whichtakes into inclined slots 7, in the opposite walls of the hub so thatwhenthe key is moved longitudinally in its hearings in the hub it willbe Caused to partake of a slight rotation 01' twisting movement andthereby turn the disengaging arm 16 into or out of contact with theclutch rolls 18. In other words the bearing for the plunger forms a nutwhich, when the plunger is moved longitudinally thereof acts to turn orrotate said plunger. I p

The movement of the disengaging arm 16 to unclutch the clutch rolls ishad against the pressure of asuitable spring 15, which in this instanceis coilcdabout the projecting end of the hub of the part 22 and bearsagainst the cross pin of the key dr plunger 8, holding the cross pin toone end of the inclined slots and operating to return said plunger toits normal out of action position after each unclutchiug movement. Asplit p or other ring (3, around the end of the projecting hub of thepart 22 formsa stop for the cross pin 8 preventing the accidentaldisplacen ient of the'plunger. The key or plunger 17 for moving orturning the disengaging arm 16 is operated by the independentlyni'ountod lover or arm 30 having an end formed by an adjustable stopscrew 31 for contact with the plunger, which lever may be moved by handor otherwise.

Each of the clutch rolls 18 may be insured moving into clutchingposition against the exterior shcllupon the release of the disengagingarm by a spring 5 acting in this instance indirectly ag'ainst a clutchroll by an As an illustration of'a useful application of the im- Iproved clutch, the mechanism is arranged to drive a roller 33 fast to ashaft 34 to "which the hub 21 of the clutch is also secured. .Theclutchshell 20 forms part of a driving pulley :15, the hub of which is mountedloosely on the underlying sleeve of the hub which is securcdto the shaftand carries a collar 36 holding the .llUl'C for controlling the positionor" said piece.

2. In a clutch. the combination of a rotatim: drivim: memher. a drivenmember ha'vine; a central bore. interposed loosely mounted engagingpieces. a (llSLl l"'lTll.l' arm there for extending radially from theaxis oi (1 centra horn and means external of said two uremia-rs formoving the disengaging arm.

2" in a clutch. the combination of rotating driving member. a drivenmrmhvr having a central bore, inter posed loosely mounted engagingpieces a tl' ene'aging arm thoret'or extending radially from the axis 0aid central bore and mounted to turn iudt-pezulent' of the drivenmeinher and means external of said t\vo members for moving 4. In aclutch, the combination of rotating driving: meu'i her. a driven memberhaving" a central bore. interposed loosely mounted rue-a ring pieces, adisengaging. arm therefor extending radially from the an s of saidcentral bore and an axial e ernally projecting: piece carried by thedriven member tor moving said arm.

7'. in a clutch. the combination oi a 'roiatingflrivin: member, adrivenmember,havln r a central bore, interposed loosely mountedonqagiugpieces, a (llSUilfJ. in therefor extending radially from the axis ofsaid central here, an independently mounted arm and connections betweensaid arm and the disenga up. action of said diseua'aginearm.

ii. The combination of the rotating driving clutch shell. the driven hubhaving a central bore, clutch rolls inter posed between the two, atlisen: 'ing arm extending radially from the axis ot' the central boreof the hub tor moving said rolls out. of clutching position and means9)? terual ot' the shell and hub for controlling the movei'uent ol' thedisengagin; arm.

.T. The combination of the rotating clutch shell. the

'drivru hub having a central bore, clutch rolls interposed between thetwo. a disengaging rock arm axially mounted in the central bore of thehub for moving, said rolls out of clutching position and externallylilillllllttl means for op t-ratiiu. said rock arm.

x. The combinat-iorrol. the rotating clutch shell, the driven hub,clutch rolls interposed between the two; a dis one-aging rock arm formoving said rolls out of, ciutchine' position. a plunger axially mountedin the hub and en gaging said rock arm and external means for moving theplunger.

arm for controlling: the.

senses l l. The combination of the rotating clutch shell, the

driven huh, clutch rolls interposed between the two, a

disengaging arm for moving: said rolls out. of clutching pos' ion. aplunger for moving saidarni axially mounted in and movable withrespcctto the hub and external means for moving said plunger. 1

lo. 'llncombination oi the rotating clutch shell, a driven huh. clutchrolls interposed between the two, a (lisongaa'iug; arm for the rolls, akey engagingfsaid-arrn and mounted in the hub to turn with respectthereto and exit-rnally mounted means for moving the key.

1i. 'lhe combination of the rotating clutch shell, a

driven hub formed of two united parts. distance pieces between the twolnilrforining parts and providing heap iug: [are [or the huh, interposedclutch rolls between said hub bearing faces and the shell; :1 disengiarm for the roll: mounted in the space between the two hub-forming;parts and external means for moving thev disengaging arm.

12. The combination or" the rotating clutch shell, a driven huh formedoi t\vo united parts. distance pieces hetwveu the tvvo lntlvtorniingparts and providing hear ing iaccs for the hub. interposed clutch rollsbetween. said huh bearing; faces and the shell, a disengaging; arm forthe rolls mounted in the space between the two huh-forming parts and anexternally projecting piece carried by the llllll for moving said arm.

3. The combination of the rotating: clutch driven hut) termed of twounited p: llQlWtUn the two hubtwining parts ant. providing hearing fac sfor the hub, interposed cl (.11 rolls between the hub hearing faces andthe sbelh a engaging arm for the rolls mounted in the space be con thetwo hubiorming parts and an externally projecting; plunger mountedaxially in the hub and adapted to move independently thereof.

14. The combination of the l't ating clutch shell, the

shell, the

driven huh having tangential hearing faces and provided shell, springpressed and indepeniently mountee earing pieces carried by the hubacting to move the FOIL. nto rlutchimi position and externally operateddisengagl arm for moving; the rolls out of said position. i

in testimony whereof. l have signed my name specification in the pr this14th (lay of .l lil l'llfll to this nceoi two subscribing witnesses, y,1905.

FREDERICK G. JAHN.-:

Witnesses Ul-IU il. Gaaintn, A. T. Denrum.

distance pieces t

